Footwear sole



FIG. 1 is a top view of a footwear sole showing my new design;

FIG. 2 is a right side elevatinal view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a footwear sole, as shown and described. 